/Engine/Source/Runtime/Slate/Public/Framework/MultiBox/MultiBox.h
Finds an existing block by name and type
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< const [FMultiBlock](API\Runtime\Slate\Framework\MultiBox\FMultiBlock) > FindBlockFromNameAndType ( const [FName](API\Runtime\Core\UObject\FName) InName, const EMultiBlockType InType ) const